package com.trf.dao;

import com.trf.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * @author 唐荣锋
 * @Date 2022/3/17-星期四-17:01
 *
 * 部门dao
 */
@Repository
public class DepartmentDao {
    //模拟数据库中的数据
    private static Map<Integer, Department> departments = null;

    static {
        departments = new HashMap<Integer, Department>();//创建一个部门表

        departments.put(101,new Department(101,"教学部"));
        departments.put(102,new Department(102,"公关部"));
        departments.put(103,new Department(103,"商务部"));
        departments.put(104,new Department(104,"财务部"));
        departments.put(105,new Department(105,"销售部"));
    }

    //得到所有部门信息
    public Collection<Department> getDepartments(){
        return departments.values();
    }

    //通过ID得到部门
    public Department getDepartmentById(Integer id){
        return departments.get(id);
    }
}
